Thank you to Anora / MorbidOrb and Roxy for feedback and help.
*
"GLUCK GLUCK GLUCK!"
"Oh shit," I moaned.
I had never been so pent up before, and the tightness around my girth was unreal. It was so tight, so hot, so wet, that I thought my cock was gonna explode at any moment.
"MMMMPH!" I moaned through my bit lips, fighting my own orgasm.
The feeling of her mouth wrapped tightly around my cock was heaven. Just heaven. After seeing Kim and Luna together, I had been so riled up I had no idea what to do with myself. I never thought I'd say this, especially given that Luna is my sister, but walking in on Luna's naked ass thrusting into the helpless mess that was my wife, her tongue deep in my wife's mouth, was a huge turn-on. The biggest.
A woman I loved so much was taken and pleasured by somebody else, but not any other person, but my own sister, who was a very attractive person in her own right. I had never considered Luna like this, but her being my own flesh and blood, someone I loved as well, made it so much better. It was so fucked, but that was precisely why it was so good. The burn was unreal, but this time I fucking loved it.
To see Kim in such pleasure, hear her so satisfied... It was such a sexy scene I played over and over in my brain as I thrust away.
"GLUCK GLUCK GLUCK!"
I knew I was close, I could feel my balls tighten, the pressure build in my cock. I lifted up to see if Amanda would mutter the safe word, as I knew when I broached my orgasm I'd enter dangerous territory for her throat and oxygen's well-being.
Amanda gasped several times but didn't say a word, so back in I went.
After seeing those two hotties, Kim and Luna, going at it like they did, I had immediately made my way over to Amanda's place. I had never been there before, but after getting the address from the blonde herself, I was there in no time.
Amanda had answered the door wearing nothing but a black silk robe, and it was pretty easy to tell she wasn't wearing anything else underneath. I had immediately pushed my way into her apartment, and as soon as we were out of view of the still-open door, I was inside her mouth, thrusting like a maniac possessed.
"GLUCK GLUCK GLUCK!"
Amanda's eyes were watering, but I could see the excitement in them. She loved sucking cock, and she loved getting fucked hard and rough. Being so riled up from seeing my own wife being defiled and pleasured by my own sister drove every hard thrust into Amanda's throat, and I could feel the impending orgasm rise. I shoved my mouth into her pussy, clutched her ass cheeks with a death grip, and groaned out as I violently shot my load down her throat.
"GLUCK GLUCK GLUCK!"
"Take it all," I growled.
"GLUCK GLUCK GLUCK!"
I felt my cock explode with pleasure, shooting out cum like a fire hose. I had to close my eyes, visions of Luna's naked pale as thrusting, angling Kim's hips in angles where she wanted them to be, taking my wife to new heights, making my wife cum and cum again by the seams of it.
In addition, my nose filled with the sweet aromas of an aroused woman, as I had ended up on Amanda upside down, my head between her thighs and vice versa. My fingers dug into her inner thighs as I ate her out, pushing her over the edge too, just in time for her to take the final drops of my ejaculation.
"GLUCK GLACK GLACK GLACK GLACK!"
I lay there on Amanda's bed, panting heavily, feeling the afterglow of a great orgasm. I couldn't believe how much cum I had released. How hard I had been. It was probably one of the best experiences I'd ever had. Getting relief like this, fueled by Kim's naughtiness.
Then, as I had almost passed out from the exert of energy, I felt Amanda lightly tap my thigh, reminding me to give her air. I hoisted off of her, and she drew in sharply, coughing a bit from the lack of oxygen from me hilting into her without remorse.
"You okay?" I asked. Amanda held out a hand and nodded.
"Just peachy. Jesus Christ, Josh, what got into you?" she coughed.
"Erh, I don't know," I lied.
While I was very adamant about what made me so fucking horny, I wasn't sure what I could tell Amanda, as fucked as that was after what I had just done to her. I mean, she gossiped too much. Linda had found out some of my deepest fetishes through Amanda. We were just lucky Linda was just a nice enough girl to not make a huge deal out of it.
Also, there were two other people involved, my wife and sister, so if any information was to be shared, they should at the very least have a say in it.
"Kim sort of teased me and I needed release," I said, giving part of the truth. I hated not being honest.
"I think we should do this more often," Amanda said. "God, I think I'm going to need a shower after this. Scratch that. I
know
I need one."
Amanda jumped out of her bed, and starch naked, a magnificent sight to behold, she paraded over to a door I presumed was the bathroom.
"You've known me for a few years, and the first time you visit me at my apartment you fuck my face?" she said, grabbing some clothes on her way.
"Sorry," I said, a bit of guilt rising within me. I was usually not like this, but today... Today I had to get it out of my system.
"Don't be," Amanda said, pausing in the doorway. "You wanna join me?"
"Erh, I don't think that is a good idea..." I said, not wanting to put myself in a compromising position. Kim had okayed oral, but if I got my cock lodged between those sexy cheeks of Amanda's in a warm shower, who knows what slippery, heh, slope that would lead to.
Amanda shrugged, swinging the door open, and before disappearing into the bathroom she said, "Those are her terms, not mine. I'll leave the door open if you change your mind."
"Sure," I said, though I thought I should perhaps call Kim.
I sorta realized now that I calmed down a bit how it might've looked to Kim if she saw me, and then I disappeared. Something similar like that had happened before, so it probably didn't send the right signals. I had to call and tell her everything was alright. More than alright.
*
"What's wrong? Kim?" Luna asked, as I bolted out of bed and looked out into the hallway. I then moved to the window, seeing clear signs that the Civic had driven away in the light cover of snow across our driveway.
"Josh... saw us... And then I think he went off," I explained.
Luna fell back on the pillow, letting out a frustrated sound as she held her palms to her face as if shielding her eyes from the real world for a moment. I felt the same way. Guilt. We were the two people who Josh loved the most, and we had betrayed him and hurt him to the utmost. I shouldn't have pushed for it. I felt like such an idiot for fucking up again. Why was I like this? Why did I have to be such a horny girl?
"Fuck," Luna cursed, swinging her feet out from the covers and sitting on the side of her bed. Naked and beautiful, but with so much hurt.